Zobrazeno 1 - 10
of 736
pro vyhledávání: '"A. Roman-Lopes"'
Autor:
Saito, R. K., Hempel, M., Alonso-García, J., Lucas, P. W., Minniti, D., Alonso, S., Baravalle, L., Borissova, J., Caceres, C., Chené, A. N., Cross, N. J. G., Duplancic, F., Garro, E. R., Gómez, M., Ivanov, V. D., Kurtev, R., Luna, A., Majaess, D., Navarro, M. G., Pullen, J. B., Rejkuba, M., Sanders, J. L., Smith, L. C., Albino, P. H. C., Alonso, M. V., Amôres, E. B., Angeloni, R., Arias, J. I., Arnaboldi, M., Barbuy, B., Bayo, A., Beamin, J. C., Bedin, L. R., Bellini, A., Benjamin, R. A., Bica, E., Bonatto, C. J., Botan, E., Braga, V. F., Brown, D. A., Cabral, J. B., Camargo, D., Garatti, A. Caratti o, Carballo-Bello, J. A., Catelan, M., Chavero, C., Chijani, M. A., Clariá, J. J., Coldwell, G. V., Peña, C. Contreras, Ramos, R. Contreras, Corral-Santana, J. M., Cortés, C. C., Cortés-Contreras, M., Cruz, P., Daza-Perilla, I. V., Debattista, V. P., Dias, B., Donoso, L., D'Souza, R., Emerson, J. P., Federle, S., Fermiano, V., Fernandez, J., Fernández-Trincado, J. G., Ferreira, T., Lopes, C. E. Ferreira, Firpo, V., Flores-Quintana, C., Fraga, L., Froebrich, D., Galdeano, D., Gavignaud, I., Geisler, D., Gerhard, O. E., Gieren, W., Gonzalez, O. A., Gramajo, L. V., Gran, F., Granitto, P. M., Griggio, M., Guo, Z., Gurovich, S., Hilker, M., Jones, H. R. A., Kammers, R., Kuhn, M. A., Kumar, M. S . N., Kundu, R., Lares, M., Libralato, M., Lima, E., Maccarone, T. J., Cortés, P. Marchant, Martin, E. L., Masetti, N., Matsunaga, N., Mauro, F., McDonald, I., Mejías, A., Mesa, V., Milla-Castro, F. P., Minniti, J. H., Bidin, C. Moni, Montenegro, K., Morris, C., Motta, V., Navarete, F., Molina, C. Navarro, Nikzat, F., Castellón, J. L. Nilo, Obasi, C., Ortigoza-Urdaneta, M., Palma, T., Parisi, C., Ramírez, K. Pena, Pereyra, L., Perez, N., Petralia, I., Pichel, A., Pignata, G., Alegría, S. Ramírez, Rojas, A. F., Rojas, D., Roman-Lopes, A., Rovero, A. C., Saroon, S., Schmidt, E. O., Schröder, A. C., Schultheis, M., Sgró, M. A., Solano, E., Soto, M., Stecklum, B., Steeghs, D., Tamura, M., Tissera, P., Valcarce, A. A. R., Valotto, C. A., Vasquez, S., Villalon, C., Villanova, S., Cádiz, F. Vivanco, Bacigalupo, R. Zelada, Zijlstra, A., Zoccali, M.
Publikováno v:
A&A 689, A148 (2024)
The ESO public survey VISTA Variables in the V\'ia L\'actea (VVV) surveyed the inner Galactic bulge and the adjacent southern Galactic disk from $2009-2015$. Upon its conclusion, the complementary VVV eXtended (VVVX) survey has expanded both the temp
Externí odkaz:
http://arxiv.org/abs/2406.16646
Autor:
Roman-Lopes, A.
O-type stars are known to significantly contribute to both the dynamics and evolution of galaxies. Massive and luminous, they probably control and regulate the galaxies star formation rates. For this work I performed a redetermination of the spectral
Externí odkaz:
http://arxiv.org/abs/2404.16178
Autor:
Serna, Javier, Pinzón, Giovanni, Hernández, Jesús, Manzo-Martínez, Ezequiel, Mauco, Karina, Román-Zúñiga, Carlos G., Calvet, Nuria, Briceño, Cesar, López-Valdivia, Ricardo, Kounkel, Marina, Stringfellow, Guy S., Stassun, Keivan G., Pinsonneault, Marc, Adame, Lucia, Cao, Lyra, Covey, Kevin, Bayo, Amelia, Roman-Lopes, Alexandre, Nitschelm, Christian, Lane, Richard R.
We developed a grid of stellar rotation models for low-mass and solar-type Classical T Tauri stars (CTTS) ($0.3M_{\odot}
Externí odkaz:
http://arxiv.org/abs/2403.07505
Autor:
Jones, Amy M., Beaton, Rachael L., Cherinka, Brian A., Masters, Karen L., Lucatello, Sara, Diamond-Stanic, Aleksandar M., Bird, Sarah A., Blanton, Michael R., Cunha, Katia, Farr, Emily E., Feuillet, Diane, Frinchaboy, Peter M., Hagen, Alex, Kinemuchi, Karen, Lundgren, Britt, Marinelli, Mariarosa L., Myers, Adam D., Roman-Lopes, Alexandre, Ross, Ashley J., Sanchez-Gallego, Jose R., Schmidt, Sarah J., Sobeck, Jennifer, Stassun, Keivan G., Tayar, Jamie, Vargas-Magana, Mariana, Wilson, J. C., Zasowski, Gail
The Sloan Digital Sky Survey (SDSS) is one of the largest international astronomy organizations. We present demographic data based on surveys of its members from 2014, 2015 and 2016, during the fourth phase of SDSS (SDSS-IV). We find about half of SD
Externí odkaz:
http://arxiv.org/abs/2311.08970
Autor:
Povick, Joshua T., Nidever, David L., Majewski, Steven R., Geisler, Doug, Cioni, Maria-Rosa L., Yuxi, Lu, Muñoz, Ricardo, Stringfellow, Guy S., Almeida, Andrés, Longa-Peña, Penélope, Lane, Richard R., Roman-Lopes, Alexandre
We present the abundance gradients of the Large Magellanic Cloud (LMC) for 25 elemental abundance ratios and their respective temporal evolution as well as age-[X/Fe] trends using 6130 LMC field red giant branch (RGB) stars observed by SDSS-IV / APOG
Externí odkaz:
http://arxiv.org/abs/2309.12503
Autor:
Usher, Christopher, Dage, Kristen C., Girardi, Léo, Barmby, Pauline, Bonatto, Charles J., Chies-Santos, Ana L., Clarkson, William I., Camus, Matias Gómez, Hartmann, Eduardo A., Ferguson, Annette M. N., Pieres, Adriano, Prisinzano, Loredana, Rhode, Katherine L., Rich, R. Michael, Ripepi, Vincenzo, Santiago, Basilio, Stassun, Keivan G., Street, R. A., Szabó, Róbert, Venuti, Laura, Zaggia, Simone, Canossa, Marco, Floriano, Pedro, Lopes, Pedro, Miranda, Nicole L., Oliveira, Raphael A. P., Reina-Campos, Marta, Roman-Lopes, A., Sobeck, Jennifer
The Vera C. Rubin Observatory will undertake the Legacy Survey of Space and Time, providing an unprecedented, volume-limited catalog of star clusters in the Southern Sky, including Galactic and extragalactic star clusters. The Star Clusters subgroup
Externí odkaz:
http://arxiv.org/abs/2306.17333
Autor:
Povick, Joshua T., Nidever, David L., Massana, Pol, Tayar, Jamie, Olsen, Knut A. G., Hasselquist, Sten, Cioni, Maria-Rosa L., Nitschelm, Christian, Carrera, Ricardo, Choi, Yumi, Roman-Lopes, Alexandre, Majewski, Steven R., Almeida, Andrés, Cunha, Katia, Smith, Verne V.
Stellar ages are critical for understanding the temporal evolution of a galaxy. We calculate the ages of over 6000 red giant branch stars in the Large Magellanic Cloud (LMC) observed with SDSS-IV / APOGEE-S. Ages are derived using multi-band photomet
Externí odkaz:
http://arxiv.org/abs/2306.06348
Autor:
Muñoz, César, Monachesi, Antonela, Nidever, David L., Majewski, Steven R., Cheng, Xinlun, Olsen, Knut, Choi, Yumi, Zivick, Paul, Geisler, Douglas, Almeida, Andres, Muñoz, Ricardo R., Nitschelm, Christian, Roman-Lopes, Alexandre, Lane, Richard R., Fernández-Trincado, José G.
Publikováno v:
A&A 680, A79 (2023)
We present the first detailed chemical analysis from APOGEE-2S observations of stars in six regions of recently discovered substructures in the outskirts of the Magellanic Clouds extending to 20 degrees from the LMC center. We also present, for the f
Externí odkaz:
http://arxiv.org/abs/2305.19460
Autor:
Inight, K., Gänsicke, Boris T., Schwope, A., Anderson, S. F., Badenes, C., Breedt, E., Chandra, V., Davies, B. D. R., Fusillo, N. P. Gentile, Green, M. J., Hermes, J. J., Huamani, I. Achaica, Hwang, H., Knauff, K., Kurpas, J., Long, K. S., Malanushenko, V., Morrison, S., C., I. J. Quiroz, Ramos, G. N. Aichele, Roman-Lopes, A., Schreiber, M. R., Standke, A., Stütz, L., Thorstensen, J. R., Toloza, O., Tovmassian, G., Zakamska, N. L.
Publikováno v:
2023MNRAS.525.3597I
SDSS-V is carrying out a dedicated survey for white dwarfs, single and in binaries, and we report the analysis of the spectroscopy of cataclysmic variables (CVs) and CV candidates obtained during the final plug plate observations of SDSS. We identify
Externí odkaz:
http://arxiv.org/abs/2305.13371
Publikováno v:
A&A 675, A22 (2023)
Context: The study of high-mass stars found to be isolated in the field of the Milky Way may help to probe the feasibility of the core-accretion mechanism in the case of massive star formation. The existence of truly isolated stars may efficiently pr
Externí odkaz:
http://arxiv.org/abs/2305.11612